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Huawei H12-821_V1.0 - HCIP-Datacom-Core Technology V1.0

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Total 329 questions

What is the default sending interval of BFD packets?

A.

10s

B.

5s

C.

100ms

D.

1000ms

Which of the following community attributes enables a device to send a received route with this attribute toany BGP peer?

A.

No_Advertise

B.

Internet

C.

No_Export

D.

No_Export_Subconfed

Multiple BGP processes cannot be configured on the same router.

A.

TRUE

B.

FALSE

An IP prefix list is configured on a router using the following command:

ip ip-prefix huawei index 10 permit 10.1.1.0 24 greater-equal 26

In this case, the value ofgreater-equal-valueis ____, and the value ofless-equal-valueis ____.

On an IS-IS network, routers send LSPs to exchange link state information. LSPs are classified into Level-1 LSPs and Level-2 LSPs and have the same format. Which of the following parts constitute the LSP ID in an LSP?

A.

LSP Number

B.

Pseudonode ID

C.

System ID

D.

IS Type

In addition to a route reflector, the confederation is another method that reduces the number of IBGP connections in an AS.

Which of the following statements are true about the confederation technology? (Choose all that apply)

A.

This technology is applicable to large-scale networks.

B.

Special EBGP connections are established among sub-ASs in a confederation, and the sub-ASs need to be fully meshed.

C.

All member devices in a confederation need to be reconfigured.

D.

The logical topology does not need to be changed when a confederation is used.

When receiving a packet, a Huawei router matches the packet against ACL rules. The default ACL matching order used by the Huawei router is.

Without a prior version check, an engineer configures IGMP snooping on a device and the version of IGMP snooping is earlier than the IGMP versions on user hosts. In this case, which of the following situations will occur?

A.

Users cannot receive multicast data because the device forwards received IGMP Report messages only to router ports and does not generate group member ports or forwarding entries.

B.

Users cannot receive multicast data, but the device generates forwarding entries after receiving IGMP Report messages.

C.

The IGMP snooping version of the device is automatically degraded, and users can receive multicastdata properly.

D.

The IGMP versions of the hosts are automatically upgraded, and users can receive multicast data properly.

Which of the following statements regarding OSPF route summarization is false?

A.

OSPF supports two route summarization modes: ABR summarization and ASBR summarization.

B.

Any router in OSPF can summarize routes.

C.

Route summarization is the process of summarizing routes with the same prefix into one route and then advertising only the summarized route to other areas.

D.

Route summarization can reduce routing information, decrease the routing table size, and improve router performance.

As shown in the figure, SWA, SWB, and SWC run the Rapid Spanning Tree Protocol (RSTP). What are the roles of SWB's GE0/0/2 and SWC's GE0/0/1?

A.

Backup port, alternative port

B.

Alternative port, backup port

C.

Backup port, root port

D.

Root port, designated port